Chery Tiggo. Manual — part 159
6.
CHECK INJECTOR POWER SUPPLY CIRCUIT FOR OPEN
• Turn ignition switch on.
• Check injector supply voltage between sensor ter-
minal and ground in the electrical connector.
• Battery voltage should exist.
Is the check result normal?
Yes
>>
Go to step 8.
No
>>
Go to the next step.
7.
DETECT MALFUNCTIONING PART
• Check the following:
− Harness connectors A-102, E-105
− Front fuse and relay box F3
− Fuse 12, fuse 23, fuse 24
− Check harness for an open or short to ground between injector and fuse.
Is the check result normal?
Yes
>>
With the X-431, check the system, If OK, go to the next step.
No
>>
Repair or replace malfunctioning part.
8.
CHECK INJECTOR CONTROL CIRCUITS FOR AN OPEN
• Check injector control circuit voltage.
• 3.6 V should exist.
Is the check result normal?
Yes
>>
Go to step 10.
No
>>
Go to the next step.
DIAGNOSIS & TESTING
LTSMD030024
03
9.
DETECT MALFUNCTIONING PART
• Turn ignition switch off.
• Disconnect ECM harness connector.
• Check harness continuity between following terminals.
INJECTOR NO.
ECM
TERMINAL
INJECTOR
TERMINAL
1
27
2
2
6
2
3
7
2
4
47
2
• Continuity should exist.
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Repair circuit for an open in harness or connectors.
10.
CHECK INJECTOR RESISTANCE
• Check resistance as table shown.
• Check the fuel injector resistance as shown in the following:
INJECTOR
NO.
INJECTOR
TERMINAL
RESISTANCE
(APPROXIMATELY)
⍀ (20°C)
1
1 & 2
11 - 16
2
1 & 2
3
1 & 2
4
1 & 2
• Also check sensor signal output.
• Connect ECM connector.
• Connect injector connector.
• Check the fuel injector voltage as shown in the following:
TERMINAL NO.
ITEM
CONDITION
DATA (AVERAGE DC
VOLTAGE)
6
Injector 2
• Engine is running
• Idle
• Warm-up condition
• Accelerate suddenly
Voltage: 11 - 14 V
7
Injector 3
27
Injector 1
47
Injector 4
DIAGNOSIS & TESTING
Is the check result normal?
Yes
>>
Go to the next step.
No
>>
Replace injector.
11.
CHECK DTC
• With the X-431 scan tool, read ECM DTCs.
• See ⬙DTC Confirmation Procedure⬙.
Is DTC P0201, P0202, P0203 or P0204 still present?
Yes
>>
Replace the ECM.
NOTE : The Immobilizer control module must be matched to the new ECM (See ECM Removal & Instal-
lation in Section 03 Electronic Engine Controls).
No
>>
The system is now operating properly.
Reassemble the vehicle and road test to verify the customers complaint is repaired.
DIAGNOSIS & TESTING
03
P0221 - Throttle Position Sensor B Performance
DIAGNOSIS & TESTING
LTSMW030025T
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст